ROLEX. A MENS EXTREMELY RARE STAINLESS STEEL AUTOMATIC WRISTWATCH WITH POINTED CROWN GUARDS 'CORNINO' AND 'EXCLAMATION MARK DIAL' Model: Submariner 'exclamation mark dial'  Reference number: 5512 Date: 1962 Movement: Signed, 25-Jewels, Cal.1530, No.7XXXX Dial: Signed, black, luminous hour markers, baton quarters "exclamation mark", gilt outer division, gilt mercedes hands with luminous insert, gilt centre seconds hand with luminous insert Case: Signed, brushed and polished stainless steel, pointed crown guards, screw down back, inner case back stamped 111.62, bi-directional grey bezel with silvered Arabic numerals and luminous dot, No.76XXXX Strap: Generic brown strap, stainless steel buckle Size: 39mm In 1953, French diver Jacqes Cousteau wrote The Silent World, a book that narrated his underwater explorations, This book and the Academy Award-winning film that followed captured the world's imagination and forged a generation of recreational divers. Rolex's response to this (and the ground-breaking divers watch developed by Blancpain) was to create a versatile wristwatch that still to this day continues to stand to test of time - the Submariner. This particular watch is all the more interesting because of the pointed crown guards and the "exclamation mark dial", making it an extremely rare and collectable piece. The small radium dot at the 6 o'clock position, which due to being located below a baton, resembles and exclamation mark. These kind of dials were produce for only a short period of time, between 1961 and 1962. The second notable feature is the pointed crown guards. These crown guards ( or "Cornino" in Italian), were produce by Rolex after complaints from costumers about bulkiness, Rolex filed away the square crown guards of their stock. The "Cornino" was born.